2OM-1088-002.pdf - 第73页

Tg0699-PM-D2 1.2.5 Screen Recognition (1) Scr . Recog. Function The machine performs only the two-point recognition. (2) Center Recognition It can be selected whether or not the center recognition should be performed. ON…

Tg0699-PM-D2

Calib. Lamp

This sets the lighting method when the P.E.C. recognition mark

is recognized, using the screen recognition camera in the "2-

Camera Calibration".

Nomral : Selected when the contrast between fiducial mark

and PCB surface is adequate.

Ring : Selected when the gold-plated mark is used for

fiducial marks.

Both : Selected when the silver-plated mark is used on the

ceramic PCB and there is slight contrast between

the colour of the PCB surface and the fiducial marks.

(5) Recog. Adjust Correct

It can be selected whether or not the recognition adjustment

point (the center point to correct positional deviation between

the P.C.B. and the screen frame) should be specified to correct

the alignment of the P.C.B. with the screen.

ON : The specified parameters in the "Recog. Adjust Point

X" and "Recog. Adjust Point Y" text boxes become the

recog-nition adjustment point.

OFF : The P.C.B. center is automatically specified as the

recog-nition adjustment point.

(6) Recog. Adjust Point X (horizontal) and Y (vertical)

Set coordinates as the recognition adjustment point to correct

the alignment of the P.C.B. with the screen.

Unit : mm

The specified parameters become valid only when "ON" is set

in the "Recog. Adjust Correct" text box.

0207-001 Chapter 1 2-13

1.2 Operation Data

000.00

X (Horizontal)

Y (Vertical)

Fig.3B35

Recog. Adjust Correct

OFF

Fig.3B34

Tg0699-PM-D2

1.2.5 Screen Recognition

(1) Scr. Recog. Function

The machine performs only the two-point recognition.

(2) Center Recognition

It can be selected whether or not the center recognition should

be performed.

ON : The machine performs the center recognition.

OFF : The machine does not perform the center recognition.

Mark Y is recognized once and the camera is moved to the

posi-tion where the recognized fiducial mark is located at the

center of the visual field. After that, the fiducial mark is re-

recognized.

The positional accuracy is improved because the mark is

recognized at the center of the visual field (the spot of the lens

with less distortion).

0207-001 Chapter 1 2-14

1.2 Operation Data

Scr. Recog. Function

2PT.

Fig.3B36

Center Recognition

OFF

Fig.3B37

Tg0699-PM-D2

(3) Fiducial Mark #1

X (horizontal) and Y (vertical)

Set the coordinates of the first fiducial mark.

Unit : mm

Recog. Mode

Select the recognition mode.

Mark :

This recognition mode uses fiducial marks.

Model :

The image taken with the recognition camera is regis-

tered as "Model" using the "Position Teaching" tab. This

mode uses the "Model" in place of fiducial marks.

Model + Mark :

This mode recognizes the image in the center of the

model as in the mark mode, after rough positioning with

the model mode.

Code

Set the code No. of the first fiducial mark for screen recogni-

tion.

Auto Gain Adj.

Select whether or not the automatic gain is adjusted when the

Screen recognition is tested.

ON : The automatic gain adjustment is performed.

OFF : No automatic gain adjustment is performed.

Gain, Level

This sets the amplification rate, when the signal of the image

(taken by the recognition camera) is converted to image data

showing brightness.

• When the gain is decreased, the contrast becomes

greater.

• When the level is decreased, all of the brightness be-

comes greater.

0207-001 Chapter 1 2-15

1.2 Operation Data

X (Horizontal)

Y (Vertical)

000.000

Recog. Mode

Mark

Fig.3B38

Code

Auto Gain Adj.

OFF

Gain

150

Level

150

Galib. Lamp

Normal